A Modulating Control Law Command Control Method That Can Realize Transient Suppression

A technology of transient suppression and control law, applied in the field of flight control, can solve the problems of the instantaneous effect of the rudder surface and the vibration of the output command, and achieve the effect of wide application range, simple technical design and wide application prospect.

Active Publication Date: 2016-10-26
SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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AI Technical Summary

Problems solved by technology

[0004] Modern flight control systems can often achieve multiple modes of control. When the two modes are converted to each other, the rudder surface will have a serious transient effect, resulting in a large vibration of the output command.

Method used

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  • A Modulating Control Law Command Control Method That Can Realize Transient Suppression
  • A Modulating Control Law Command Control Method That Can Realize Transient Suppression
  • A Modulating Control Law Command Control Method That Can Realize Transient Suppression

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Embodiment Construction

[0022] The present invention will be described in further detail below through specific embodiments and in conjunction with the accompanying drawings.

[0023] In this example, the control system of a certain type of aircraft is the inner loop, and the leveling control method is adopted to change the balance state of the aircraft, so that the aircraft enters from one level flight state to another level flight state, and a corresponding trim will be generated during the modal exit process. Rod displacement deviation, this control method will generate a rod displacement control amount sufficient to suppress the exit transient and eliminate the modal exit transient. The control parameters used in this example are shown in Table 1 and Table 2.

[0024] Example of longitudinal adjustment control:

[0025] 1) The difference between the longitudinal control quantity calculated by the automatic flight control system and the introduced overload feedback is used as the input quantity fo...

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Abstract

The invention belongs to the technical field of flight control, and in particular relates to an efficiency control law instruction control method capable of realizing transient suppression. It is characterized in that the difference between the longitudinal control quantity calculated by the automatic flight control system and the introduced overload feedback is used as the input quantity for solving the control law of the longitudinal adjustment mechanism; the lateral control quantity calculated by the automatic flight control system and the introduced roll angle rate The feedback is poor, as the input of the control law of the horizontal adjustment mechanism; the corresponding inertial dynamic link is added to realize the follow-up function of the adjustment link; the solution method is introduced, and the intermittent adjustment mechanism is realized within the adjustment working range Work: Use the control law designed by the modulation control law to reduce the transient state of automatic flight control system mode exit and mode switching, and reduce the driver's discomfort caused by mode exit and mode switching.

Description

technical field [0001] The invention belongs to the technical field of flight control, and in particular relates to an efficiency control law instruction control method capable of realizing transient suppression. Background technique [0002] In order to meet the needs of completing different flight tasks or different working states (normal / failure) in different flight stages, modern aircraft will adopt different control systems, thus forming a multi-task multi-mode control technology in modern flight control. During the mode transition process, due to the difference of different modal state parameters and even the control structure, the aircraft may produce severe transient response. Since the 1980s, faders have been proposed as a special program for suppressing transition transients. Many different types of faders have been developed, and transient suppression methods have also been proposed for digital flight control systems, and have been applied in many aircrafts. . ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D1/08
Inventor 丁岩金环颖连莉莉朱家兴
Owner SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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